[INTERNAL] fix for commit 440ba2c51ba4d2e3e90ce5f6296f9edec6e15fcb

The stopManagerListener always locked all editors regardless of the
request due to a bad refactoring.

Change-Id: Ifc4469115b7f1beda366c53b00ac99648af63ce5
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1744
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>